The **W2CE-1A2-R2/N** is a specific model within the **W2CE series** of high-power, chassis-mounted, wirewound resistors manufactured by **Widap**. These components are designed for industrial applications requiring high energy dissipation and durability. --- ### 1. Technical Specifications Table The following table highlights the core characteristics of this specific component: | Feature | Specification | | :--- | :--- | | **Component Type** | Wirewound Power Resistor | | **Housing Material** | Aluminum Cased / Anodized | | **Mounting Style** | Chassis Mount (Heatsink required) | | **Resistance Tolerance** | ±5% or ±10% (standard for R2 series) | | **Protection Class** | IP00 to IP65 (depending on terminal housing) | | **Cooling Method** | Natural Convection or Forced Air | | **Standard Application** | Braking resistor, Load bank, Inverter systems | --- ### 2. Breakdown of the Model Name (Nomenclature) The part number can be decoded to understand its physical and electrical properties: * **W2CE**: The series identifier (High-power aluminum-housed wirewound resistors). * **1A2**: Indicates the specific frame size and physical dimensions of the resistor body. * **R2**: Refers to the resistance value. In this context, **R2 usually represents 0.2 Ohms**. * **/N**: Often indicates a specific terminal type (Nut/Bolt) or a standard non-inductive variant depending on the sub-revision. --- ### 3. Key Electronic Components & Construction The W2CE-1A2-R2/N is composed of several critical layers to handle high thermal loads: 1. **Resistive Element:** A high-grade alloy wire (typically Nickel-Chromium) wound around a ceramic core. 2. **Insulation:** The internal assembly is encapsulated in a high-thermal-conductivity cement or epoxy to ensure electrical isolation from the outer casing. 3. **Aluminum Casing:** The outer shell acts as a primary heat spreader. The fins on the casing increase surface area for better heat dissipation. 4. **Terminals:** Heavy-duty screw or bolt terminals designed to handle high current without melting or significant voltage drops. --- ### 4. Common Use Cases These resistors are not found in consumer electronics but rather in heavy industrial environments: * **Dynamic Braking:** Used in Variable Frequency Drives (VFDs) to dissipate kinetic energy from a motor when it slows down. * **Soft Start Circuits:** Limiting inrush current in large transformers or motors. * **Dummy Loads:** Testing power supplies or generators by simulating a high-current load. ---